{"product_id":"thk-co-ltd-611859-ball-screw-assembly-rotary-to-linear-motion","title":"THK Co., Ltd. 611859 Ball Screw Assembly Rotary To Linear Motion","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"761\"\u003eThe THK 611859 Ball Screw is a precision linear motion drive assembly featuring a 1-inch diameter screw shaft and an overall length of approximately 39 inches. Designed to convert rotary motion into smooth, accurate linear movement with high mechanical efficiency, it provides precise positioning, low friction, and long service life for industrial automation and machine tool applications. Commonly installed in CNC machines, automated manufacturing equipment, material handling systems, packaging machinery, and precision positioning systems. Maintenance teams, OEM machine builders, and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this ball screw for equipment repairs, retrofits, replacement, and new machine construction. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"763\" data-end=\"780\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"782\" data-end=\"1546\"\u003eThe THK 611859 is a precision ball screw assembly engineered to deliver efficient linear motion by recirculating steel balls between the screw shaft and the ball nut. Compared with conventional lead screws, THK ball screws significantly reduce drive torque while providing high positioning accuracy, smooth operation, and extended service life. The assembly is suitable for CNC machinery, industrial robots, semiconductor equipment, automated assembly systems, measuring equipment, and other applications requiring repeatable, high-efficiency linear motion. While the manufacturer number 611859 identifies this specific assembly, detailed dimensional and preload specifications are not publicly available in THK documentation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1548\" data-end=\"1577\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1579\" data-end=\"2362\"\u003e• Brand: THK\u003cbr data-start=\"1591\" data-end=\"1594\"\u003e• Part Number: 611859\u003cbr data-start=\"1615\" data-end=\"1618\"\u003e• Product Type: Ball Screw Assembly\u003cbr data-start=\"1653\" data-end=\"1656\"\u003e• Screw Diameter: 1 in (25.4 mm)\u003cbr data-start=\"1688\" data-end=\"1691\"\u003e• Overall Length: Approximately 39 in (991 mm)\u003cbr data-start=\"1737\" data-end=\"1740\"\u003e• Motion Type: Rotary to Linear Motion\u003cbr data-start=\"1778\" data-end=\"1781\"\u003e• Bearing Type: Recirculating Ball Screw\u003cbr data-start=\"1821\" data-end=\"1824\"\u003e• Drive Efficiency: High efficiency, low friction\u003cbr data-start=\"1873\" data-end=\"1876\"\u003e• Positioning Accuracy: High precision linear positioning\u003cbr data-start=\"1933\" data-end=\"1936\"\u003e• Backlash: Configuration dependent\u003cbr data-start=\"1971\" data-end=\"1974\"\u003e• Lubrication: Grease or oil lubrication compatible\u003cbr data-start=\"2025\" data-end=\"2028\"\u003e• Mounting: Machine-specific end support configuration\u003cbr data-start=\"2082\" data-end=\"2085\"\u003e• Material: Hardened alloy steel screw shaft and ball nut\u003cbr data-start=\"2142\" data-end=\"2145\"\u003e• Features: Smooth linear motion, high mechanical efficiency, low operating torque, high rigidity, long service life, suitable for precision positioning and industrial automation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2364\" data-end=\"2388\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2390\" data-end=\"2545\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• THK BNK Series Ball Screw Assembly\u003cbr data-start=\"2426\" data-end=\"2429\"\u003e• THK BIF Series Precision Ball Screw\u003cbr data-start=\"2466\" data-end=\"2469\"\u003e• THK BLK Series Large Lead Ball Screw\u003c\/p\u003e","brand":"THK","offers":[{"title":"New","offer_id":51713990066478,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_90e9c7f9-75e0-4430-ac66-8b5ecf5ab669.jpg?v=1770413137","url":"https:\/\/plgautomation.com\/products\/thk-co-ltd-611859-ball-screw-assembly-rotary-to-linear-motion","provider":"PLG Automation ","version":"1.0","type":"link"}